Physics The rate of change of velocity with respect to time.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "acceleration" in a sentence
"So it's a scientific use of the term acceleration, as opposed to what we would think of."
"That is, the acceleration is a negative multiple of the position."
": Basically, this apps just attempts to give a value for the local gravitational field (which it calls the acceleration due to gravity)."